WO1999030945A1 - Maitre cylindre - Google Patents

Maitre cylindre Download PDF

Info

Publication number
WO1999030945A1
WO1999030945A1 PCT/US1998/026648 US9826648W WO9930945A1 WO 1999030945 A1 WO1999030945 A1 WO 1999030945A1 US 9826648 W US9826648 W US 9826648W WO 9930945 A1 WO9930945 A1 WO 9930945A1
Authority
WO
WIPO (PCT)
Prior art keywords
protrusions
master cylinder
ports
machined
sets
Prior art date
Application number
PCT/US1998/026648
Other languages
English (en)
Other versions
WO1999030945A9 (fr
Inventor
Bernhard W. Kullmann
Kevin J. Gallagher
Kevin K. Lee
Eric M. Formiller
Original Assignee
Continental Teves, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental Teves, Inc. filed Critical Continental Teves, Inc.
Publication of WO1999030945A1 publication Critical patent/WO1999030945A1/fr
Publication of WO1999030945A9 publication Critical patent/WO1999030945A9/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B60T11/20—Tandem, side-by-side, or other multiple master cylinder units

Definitions

  • the present invention relates to a master cylinder for a hydraulic system such as a brake system or a clutch system.
  • a master cylinder usually includes a set of inlet ports connected to a fluid supply reservoir and a set of outlet ports connected to a slave cylinder.
  • the master cylinders for brake and clutch usually are pedal-actuated which means that these cylinders are located in the front on that side of the engine of the car where the driver is placed.
  • 5,349,8 2 0 achieves this result by arranging two inlet ports and two outlet ports in a line in an alternating order.
  • two tubes of variable shape are attached to the inlet ports by means of a flange portion.
  • the ports of the tubes can point to any desired direction.
  • An object of the present invention is to provide a universal hydraulic master cylinder which, with only one cast, fits for left-hand driven vehicles as well as for right-hand driven vehicles .
  • Another object of the invention is to provide a hydraulic master cylinder which does not require an increased number of parts to assemble.
  • a further object of the invention is to provide a universal hydraulic master cylinder which does not require additional time for machining.
  • a master cylinder with a housing featuring two sets of first protrusions and one set of second protrusions wherein the sets of first protrusions are arranged substantially symmetrically with respect to the second protrusions.
  • the finished master cylinder then has one set of first protrusions left unmachined while the other set of first protrusions and the set of second protrusions are machined to provide inlet ports and outlet ports.
  • the cast housing can provide doubled protrusions for either type of ports.
  • a brake master cylinder including two machined inlet ports on its top and two machined outlet ports on one of its sides usually is positioned rather close to the vehicle engine which sometimes makes it impossible to provide another set of protrusions for a set of outlet ports on the other side. In this case, it is recommended to form two sets of protrusions for inlet ports.
  • the master cylinder can be rotated about its longitudinal axis to position that set of inlet protrusions on its top from which the outlet protrusions are located on the desired side.
  • the master cylinder becomes even easier to manufacture if the second set of protrusions assigned to form the outlet ports is arranged at an angular offset of 90° from each of the two sets of inlet protrusions.
  • the inlet protrusions are exactly 180° apart, and the means for mounting or fixing the master cylinder can have a very simple design, for instance with two or another even number of holes for screws or rivets in pairs of holes arranged at an offset of 180° with respect to the cylinder axis .
  • the fixing flange is no issue at all if, presuming the location of the inlet port is on the top of the master cylinder, two sets of outlet protrusions are provided, one on each side of the inlet protrusions. In this case, no rotation of the cylinder is necessary.
  • the set of outlet protrusions located on the desired side is machined.
  • a vehicle usually provides much more space for a second set of inlet protrusions under the master than for a second set of outlet protrusions on the side of the master cylinder where for instance the engine is mounted.
  • Fig. 1 shows a top view of a master brake cylinder providing two sets of protrusions adapted for machining outlet ports;
  • Fig. 2 shows a side view of the master cylinder according to Fig. 1;
  • Fig. 3 shows a top view of a master brake cylinder providing two sets of protrusions adapted for machining inlet ports;
  • Fig. 4 shows a side view of the master cylinder according to Fig. 3.
  • a master brake cylinder is shown which substantially is constructed in specular symmetry to a plane A extending vertical to the paper plane in Fig. 1 and in the paper plane in Fig. 2.
  • the cylinder housing 1 has a substantially tubular shape with a central longitudinal axis x along the line defined by the intersection of plane A and the paper plane in Fig. 1.
  • Two identical sets of two outlet protrusions 2, 3 and 4, 5, respectively, are arranged on the mantle surface of the housing at an angular offset of 180°, the protrusions of each set being in line along the axis x.
  • a set of two inlet protrusions 6 and 7 is located in the middle between the pairs of outlet protrusions 2, 3 and 4 , 5 on the mantle surface of the housing 1.
  • outlet protrusions 4 and 5 and the pair of inlet protrusions 6 and 7 are machined as outlet ports and inlet ports, respectively.
  • the other pair of outlet protrusions 3 and 4 remains unmachined as accumulations of massive metal.
  • the choice of the pair of outlet protrusions to be machined depends on the vehicle type the master cylinder is used for. Due to the fact that the outlet ports can be machined on either side of the master cylinder, the cylinder can be mounted in the same orientation for all purposes.
  • the master brake cylinder according to Figs. 3 and 4 comprises two identical sets of inlet protrusions 16, 17 and 18, 19 instead of two sets of outlet protrusions.
  • the master brake cylinder is constructed in specular symmetry to a plane B extending in the paper plane in Fig 3 and vertical to the paper plane in Fig 4.
  • the cylinder housing 11 has a substantially tubular shape with a central longitudinal axis y along the line defined by the intersection of plane B and the paper plane in Fig. 4.
  • the two sets of two inlet protrusions 16, 17 and 18, 19, respectively, are arranged on the mantle surface of the housing at an angular offset of 180°, the protrusions of each set being in line along the axis y.
  • a set of two outlet protrusions 14 and 15 is located in the middle between the pairs of inlet 16, 17 and 18, 19 on the mantle surface of the housing 11.
  • the housing of the master cylinder can be mounted in two positions, either having the protrusions 16 and 17 on its top as shown, or with the protrusions 18 and 19 on its top which the are machined instead of the protrusions 16 and 17.
  • Two identical sets of fixing flanges 20, 21 and 23, 24 are formed on the housing 11. They are arranged in axial symmetry to each other, i.e. the set of flanges 20 and 21 is rotated relative to the flanges 22 and 23 by 180° about the axis y. It may also be advisable to provide another fixing means on the flange 25 extending perpendicular to the axis y, for instance in the form of drilled holes. In this case, pairs of holes located 180° apart can be used for both mounting postions. If the two sets of inlet protrusions 16, 17 and 18, 19 are dislocated by a different angle, the sets of fixing means of what shape and location ever must have the same angular offset from each other to provide an appropriate fixation in either angular position.
  • the present invention is not limited to the embodiments shown which are just special examples of substantially symmetrical master cylinders.
  • the angle of symmetry does not necessarily have to be 180° but can be chosen at will.
  • master cylinders shown are tandem master cylinders for a brake system, the invention is also applicable to master cylinders for other purposes, such as hydraulic clutches, as the number of protrusions per set can as well be one, three or more.
  • Master cylinders including so-called central valves can be manufactured according to the invention as well as master cylinders with plunger pistons. They do not have to be pedal-actuated or acted on by a booster, but can also be motor-driven or by any other means.

Abstract

La présente invention concerne un maître cylindre hydraulique comportant des orifices d'entrée et des orifices de sortie formant un angle les uns par rapport aux autres, les orifices de sortie pouvant être des deux côtés du carter (1) sans qu'il y ait besoin de deux coulées différentes. Le maître cylindre selon l'invention est pourvu de deux ensembles de protubérances (6, 7) conçus pour donner par usinage des orifices d'entrée ou de deux ensembles de protubérances (2, 3, 4, 5) devant donner par usinage des orifices de sortie. Les deux ensembles de protubérances sont disposés symétriquement par rapport à l'un des ensembles de protubérances différentes. Ainsi, en fonction du côté demandé pour les orifices de sortie, l'usinage ne porte que sur l'un des deux ensembles de protubérances identiques, l'autre ensemble restant à l'état de matériau accumulé non usiné.
PCT/US1998/026648 1997-12-16 1998-12-15 Maitre cylindre WO1999030945A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/991,702 US6026643A (en) 1997-12-16 1997-12-16 Master cylinder
US08/991,702 1997-12-16

Publications (2)

Publication Number Publication Date
WO1999030945A1 true WO1999030945A1 (fr) 1999-06-24
WO1999030945A9 WO1999030945A9 (fr) 1999-09-30

Family

ID=25537481

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/026648 WO1999030945A1 (fr) 1997-12-16 1998-12-15 Maitre cylindre

Country Status (2)

Country Link
US (1) US6026643A (fr)
WO (1) WO1999030945A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103209874A (zh) * 2010-11-17 2013-07-17 本田技研工业株式会社 电动制动执行器的车身安装结构

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7806763B2 (en) * 1996-12-30 2010-10-05 Igt System and method for remote automated play of a gaming device
US7476153B2 (en) * 1996-12-30 2009-01-13 Walker Digital, Llc System and method for remote automated play of a gaming device
US6964611B2 (en) * 1996-12-30 2005-11-15 Walker Digital, Llc System and method for automated play of lottery games
WO2008144536A1 (fr) * 2007-05-17 2008-11-27 Walker Digital, Llc Jeu de loterie de groupe
CN102434601A (zh) * 2011-12-02 2012-05-02 芜湖博格汽车零部件有限公司 制动主缸结构
US9226431B2 (en) * 2013-12-18 2015-12-29 Caterpillar Inc. Cast housing for a configurable power converter
DE102020205358A1 (de) * 2020-04-28 2021-10-28 Continental Teves Ag & Co. Ohg Kompaktes Bremsgerät für eine hydraulische Kraftfahrzeugbremsanlage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2637859A1 (fr) * 1988-10-18 1990-04-20 Teves Gmbh Alfred Procede de fabrication d'un maitre-cylindre de freinage et maitre-cylindre selon le procede
US4979367A (en) * 1989-02-13 1990-12-25 Sbc Ltd. Brake master cylinder with selectively positionable bleed screws
EP0492191A1 (fr) * 1990-12-20 1992-07-01 Detlef Bloecker Cylindre de frein et procédé de sa fabrication
US5349820A (en) 1992-02-18 1994-09-27 Jidosha Kiki Co., Ltd. Inlet union for master cylinder

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU531398B2 (en) * 1978-10-04 1983-08-25 Lucas Industries Limited Master cylinder and reservoir assemblies
DE3224168A1 (de) * 1982-06-29 1983-12-29 Alfred Teves Gmbh, 6000 Frankfurt Druckguss-giessform fuer ein hauptbremszylindergehaeuse und mit dieser giessform hergestelltes druckguss-hauptbremszylindergehaeuse
US4472943A (en) * 1982-10-04 1984-09-25 The Bendix Corporation Reservoir assembly for a master cylinder
AU628135B2 (en) * 1989-03-09 1992-09-10 Brake And Clutch Industries Australia Pty. Ltd. Fluid pressure actuator
FR2649947A1 (fr) * 1989-07-19 1991-01-25 Bendix France Ensemble compose d'un servomoteur pneumatique, d'un maitre-cylindre et d'un reservoir
US5161375A (en) * 1991-11-05 1992-11-10 Allied-Signal Inc. Spring caging for a master cylinder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2637859A1 (fr) * 1988-10-18 1990-04-20 Teves Gmbh Alfred Procede de fabrication d'un maitre-cylindre de freinage et maitre-cylindre selon le procede
US4979367A (en) * 1989-02-13 1990-12-25 Sbc Ltd. Brake master cylinder with selectively positionable bleed screws
EP0492191A1 (fr) * 1990-12-20 1992-07-01 Detlef Bloecker Cylindre de frein et procédé de sa fabrication
US5349820A (en) 1992-02-18 1994-09-27 Jidosha Kiki Co., Ltd. Inlet union for master cylinder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103209874A (zh) * 2010-11-17 2013-07-17 本田技研工业株式会社 电动制动执行器的车身安装结构
EP2641798A1 (fr) * 2010-11-17 2013-09-25 Honda Motor Co., Ltd. Structure de fixation à une carrosserie de véhicule pour un actionneur de frein électrique
EP2641798A4 (fr) * 2010-11-17 2014-04-30 Honda Motor Co Ltd Structure de fixation à une carrosserie de véhicule pour un actionneur de frein électrique
US9551363B2 (en) 2010-11-17 2017-01-24 Honda Motor Co., Ltd. Vehicle-body attachment structure for electric brake actuator

Also Published As

Publication number Publication date
US6026643A (en) 2000-02-22
WO1999030945A9 (fr) 1999-09-30

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